Struct SqlSource

rel/sql.go:115–136

SqlSource is a table name, sub-query, or join as used in SELECT FROM - SELECT .. FROM table_name - SELECT .. from (select a,b,c from tableb) - SELECT .. FROM tablex INNER JOIN ...

	//  - SELECT .. from (select a,b,c from tableb)
	//  - SELECT .. FROM tablex INNER JOIN ...
	SqlSource struct {
		final       bool               // has this been finalized?
		alias       string             // either the short table name or full
		cols        map[string]*Column // Un-aliased columns, ie "x.y" -> "y"
		colIndex    map[string]int     // Key(alias) to index in []driver.Value positions
		joinNodes   []expr.Node        // x.y = q.y AND x.z = q.z  --- []Node{Identity{x},Identity{z}}
		Source      *SqlSelect         // Sql Select Source query, written by Rewrite
		Raw         string             // Raw Partial Query
		Name        string             // From Name (optional, empty if join, subselect)
		Alias       string             // From name aliased
		Schema      string             //  FROM `schema`.`table`
		Op          lex.TokenType      // In, =, ON
		LeftOrRight lex.TokenType      // Left, Right
		JoinType    lex.TokenType      // INNER, OUTER
		JoinExpr    expr.Node          // Join expression       x.y = q.y
		SubQuery    *SqlSelect         // optional, Join/SubSelect statement

		// Plan Hints, move to a dedicated planner
		Seekable bool
		// Memoized sql, we assume this is an immuteable struct so if this is populated use it
		pb *SqlSourcePb
	}
	// SqlWhere WHERE is select stmt, or set of expressions
	// - WHERE x in (select name from q)
	// - WHERE x = y